State two ways to prevent the rusting of iron.
What chemical process is used for obtaining a metal from its oxide ?
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be
A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was upset but after a futile argument the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?
Which metals do not corrode easily ?